Preface

Jeffrey M. Yarus; Richard L. Chambers

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Chapter from: CA 3: Stochastic Modeling and Geostatistics Edited by Jeffrey M. Yarus and Richard L. Chambers Authors: Jeffrey M. Yarus and Richard L. Chambers Methodology and Concepts Published 1994 as part of Computer Applications 3 Copyright © 1994 The American Association of Petroleum Geologists. All Rights Reserved.


	AAPG Wishes to thank the following for their generous contributions to *Stochastic Modeling* *and Geostatistics* * Amoco Production Company * Amoco E & P Technology * Kansas Geological Survey * Marathon Oil Company * Mobil Oil Corporation * Statoil Contributions are applied against the production costs of the publication, thus directly reducing the book's purchase price and making the volume available to a greater audience.

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Acknowledgments

The authors wish to acknowledge the contribution made by all of the participating authors. The time and effort they have put forth can only be appreciated by those of us involved in compiling this volume. We wish to thank the AAPG, specifically Cathleen Williams and Anne Thomas, without whose help and patience none of this would have been possible. In addition, we jointly wish to acknowledge Marathon Oil Company, GeoGraphix, and Amoco Production Company for supporting us in this endeavor.

Personal Acknowledgments from Jeffrey M. Yarus

I am indebted to the following individuals who have helped me throughout my career attain certain modest levels of proficiency in the field of mathe-matical geology. They are: Dr. Robert Ehrlich, my mentor who taught me to be a scientist and instilled me with confidence; Dr. John Davis, whom I admired from a distance for so many years and now inspires me as a colleague; Dr. Ricardo Olea, who has generously and patiently taught me the fundamentals of geostatistics; Dr. André Journel, who graciously brought me into his fold and remains a standard for my achievement as a geostatistician; R. Mohan Srivastava, whose guidance and wisdom has taught me the practical nature of geomathematics; and Dr. Gregory Kushnir, who has challenged me intellec-tually, and has allowed me to share in many of the mathematical developments in our mutual careers.

I would also like to thank my sons David and Jordan for allowing me to miss many of their soccer and hockey games, my daughter Rachel, who managed to be conceived and born during the course of this volume, and my wife Mary, for giving me all

of the time, patience and encouragement necessary to complete this work. Finally, I thank my father Leonard W. Yarus, whom I miss, and mother Marilyn S. Yarus for instilling me with curiosity and tenacity.

Personal Acknowledgments
from Richard L. Chambers

With encouragement from my parents, Bob and Aileen Chambers, I have been able to pursue my dreams, wherever they might lead, even in the direction they had not envisioned. When I entered college, I fully intended to prepare myself for a career in medicine and had given little thought to anything else. In my sophomore year, I enrolled in physical geology to learn about the rocks and landforms I saw while hiking and rock climbing. From that time on, I was hooked on geology, because it offered me the opportunity to combine my avocation with a fascinating profession. Drs. Sam Upchurch and Bob Ehrlich helped to develop my interest in statistics during my doctoral career at Michigan State University. Dr. Jean-Paul Marbeau provided me a deeper understanding of geostatistics and practical applications. I owe much to these scientists and thank them for their time and patience.

Throughout my career, my family has been very patient and understanding when so much of my time and energy was consumed by my day-to-day job. The additional time required to devote to the development of this book placed an additional burden on an already scarce commodity--my time with my family. My deepest gratitude goes to my wife Verda, and our three daughters, Kris, Kelli and Keri, for their love, support and patience.

IN MEMORY
This book is published in memory of Richard Leonard, son of Jay and China, brother of Ted.


	* About the Editors *

					Jeffrey M. Yarus was born in 1951 in Cleveland, Ohio. In 1969, he began his formal studies in geology at the College of Wooster, Ohio. During his undergraduate years, Yarus was awarded an opportunity to study geology at the University of Durham, England, on a scholarship for one year. Upon completion of the special program, he returned to Wooster and received his B.A. degree with honors in 1973. In September of that year, Yarus began his graduate studies at Michigan State University under the supervision of Robert Ehrlich. At Michigan State, Yarus first developed his interest in computer mapping and numerical and statistical analysis. In 1974, Yarus followed Ehrlich to the University of South Carolina where he finished his M.S. degree and continued through the Ph.D. program in geology. Yarus joined Amoco Production Company in New Orleans, Louisiana, in 1977 as a production geologist for the Gulf Coast region. In 1980, he left Amoco and moved to Denver, Colorado, where he worked in the independent oil business for eight years. As an independent, Yarus worked a variety of domestic basins in the Rockies, mid-continent, and Appalachian regions. In 1988, Yarus was hired by Marathon Oil Company's Petroleum Technology Center as a senior mathematical geologist. At Marathon, he played a major role in instituting desktop computer mapping and geostatistical technology. He was responsible for providing training and consulting in this area for the entire company. Yarus has written a variety of papers and taught courses on computer mapping and applied statistical methods. His professional contributions are many, and include an article in AAPG's first volume on computer applications (published in 1992), and an AAPG-sponsored course on computer mapping techniques. Yarus has been an adjunct professor at the University of Colorado, Denver, and is presently a visiting professor at the Colorado School of Mines. Today, he works for GeoGraphix, Inc., where he is the manager of technical services and support. Richard L. Chambers was born in 1947 in Algona, Iowa. He earned B.A. and M. S. degrees in geology from the University of Montana, and then attended Michigan State University, earning a Ph.D. in geology in 1975, with an emphasis on quantitative sedimentology and statistical applications. In 1972, he joined the Great Lakes Environmental Research Laboratory (GLERL), National Oceanographic and Atmospheric Administration, U.S. Department of Commerce. The bulk of his work at GLERL involved sediment-water interface geochemistry, depositional processes, and mass balance studies in Lake Michigan. Chambers joined Phillips Petroleum Company in Bartlesville, Oklahoma, in 1980 as a senior geologist. From 1980 to 1988, his activities at Phillips included research in high-resolution P- and S-wave seismic imaging and regional basin studies to develop exploration plays and lease acquisition strategies. In 1988, he joined the Amoco Production Company Research Center in Tulsa, Oklahoma, as a senior research scientist to bring geostatistical technology to Amoco. His work at Amoco involves the application of geostatistical methods to exploration and production problems, with major emphasis on data integration, reservoir characterization, and uncertainty assessment. Chambers co-developed an in-house training course in geostatistics and has taught that course for the past five years. In 1991, he became the supervisor of the reservoir imaging and characterization group, where he now spends his time on less technical issues. He has written articles in sedimentology, geochemistry, geophysics, and geostatistical applications.





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